Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 28, Pages 8654-8658Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201804673
Keywords
cerium; electrocatalysis; hybrid nanostructures; oxygen evolution reaction; transition metal sulfides
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Funding
- National Natural Science Foundation of China [21471071, 21431002]
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Transition-metal sulfides (TMSs) have emerged as important candidates for oxygen evolution reaction (OER) electrocatalysts. Now a hybrid nanostructure has been decorated with CeOx nanoparticles on the surface of ZIF-67-derived hollow CoS through in situ generation. Proper control of the amount of CeOx on the surface of CoS can achieve precise tuning of Co2+/Co3+ ratio, especially for the induced defects, further boosting the OER activity. Meanwhile, the formation of protective CeOx thin layer effectively inhibits the corrosion by losing cobalt ion species from the active surface into the solution. It is thus a rare example of a hybrid hetero-structural electrocatalyst with CeOx NPs to improve the performance of the hollow TMS nanocage.
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